TAR.GZ to 7Z Converter
Convert TAR.GZ to 7Z online — fast, secure, watermark-free. No signup required.
up to 50 files at once
auto-delete in 24h · no signup · no watermark
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How to convert TAR.GZ to 7Z online
- Click "Browse Files" or drag your TAR.GZ file into the converter above (up to 200 MB free, 500 MB with an account).
- The target format is preset to 7Z — adjust quality options in the picker if you need to.
- Hit "Convert". Your file uploads over an encrypted connection and converts automatically in the cloud — nothing to install.
- Click the green "Download" button to save your 7Z file. The original is deleted immediately and the result auto-deletes after 24 hours.
That is the entire flow — no email address, no software install, no watermark on the output. The page you are reading handles TAR.GZ to 7Z from start to finish.
What's the difference between TAR.GZ and 7Z?
TAR.GZ (Gzip-compressed tarball) and 7Z (7-Zip archive) solve different problems: TAR.GZ is a compressed archive format built for Linux/Unix software distribution and server backups, while 7Z is a compressed archive format whose strength is maximum compression for backups and large transfers. In practice you will meet TAR.GZ when dealing with Linux/Unix software distribution and server backups, and reach for 7Z when you need maximum compression for backups and large transfers — the table below compares them point by point.
| TAR.GZ | 7Z | |
|---|---|---|
| Full name | Gzip-compressed tarball | 7-Zip archive |
| Developed by | GNU Project | Igor Pavlov |
| Released | 1992 | 1999 |
| Compression | Compressed archive | Compressed archive |
| Typical use | Linux/Unix software distribution and server backups | maximum compression for backups and large transfers |
| File extension | .gz | .7z |
| MIME type | application/gzip | application/x-7z-compressed |
Why convert TAR.GZ to 7Z?
TAR.GZ (a gzip-compressed tar archive, also seen as .tgz) is the standard packaging format of the Unix and Linux world, dating to the early 1990s. The tar layer preserves the full directory tree and file permissions; the gzip layer compresses it. Source code releases, server backups, and Linux software have shipped as tarballs for three decades. Here is when 7Z is the better choice:
- →LZMA compression makes 7Z archives typically 20–40% smaller than ZIP — real savings on backups and uploads.
- →The format is open and the reference tool is free, unlike RAR.
- →It runs in the cloud — 10 free conversions a day with files up to 200 MB (20/day and 500 MB with a free account) — so even a phone or an old laptop converts at full speed.
Before you convert: three quick tips
- ●Conversion fully unpacks and repacks the archive, so time scales with the total content inside — thousands of small files take longer than one big file.
- ●Password-protected archives cannot be converted — extract them locally first and repack without encryption.
- ●Keep your original TAR.GZ — conversion never modifies it, and if you later need a different target format, starting from the original always gives the best quality.
7Z conversion settings explained
Archive conversion has no quality settings — content is preserved byte-for-byte. Filevo fully unpacks your TAR.GZ, then repacks it at the target format's default compression level, keeping the folder structure intact.
Size changes come down to the target's algorithm: 7Z (LZMA) typically lands 20–40% smaller than ZIP; ZIP buys universal out-of-the-box compatibility; TAR.GZ preserves Unix permissions and symlinks.
How the conversion works
Filevo handles TAR.GZ to 7Z with the 7-Zip engine — the benchmark tool of open-source compression, whose LZMA algorithm family is embedded in countless applications. Conversion is a two-step repack: the source archive is fully extracted (after a pre-flight check of entry count and declared size that blocks "zip bombs"), then re-created in the target format. Content is preserved byte-for-byte, and encrypted archives are rejected explicitly rather than failing silently.
What is TAR.GZ?
TAR.GZ (a gzip-compressed tar archive, also seen as .tgz) is the standard packaging format of the Unix and Linux world, dating to the early 1990s. The tar layer preserves the full directory tree and file permissions; the gzip layer compresses it. Source code releases, server backups, and Linux software have shipped as tarballs for three decades.
| Full name | Gzip-compressed tarball |
| Developer | GNU Project |
| Released | 1992 |
| MIME | application/gzip |
What is 7Z?
7Z is the native format of the open-source 7-Zip archiver, created by Igor Pavlov in 1999. Its LZMA compression typically shrinks files 20–40% smaller than the same content as ZIP, at the cost of needing 7-Zip (or a compatible tool) to open. It is the format of choice when archive size matters more than universal compatibility.
| Full name | 7-Zip archive |
| Developer | Igor Pavlov |
| Released | 1999 |
| MIME | application/x-7z-compressed |
Filevo vs other TAR.GZ to 7Z converters
An honest comparison — CloudConvert and Convertio are capable tools; here is where Filevo differs:
| Filevo | CloudConvert | Convertio | |
|---|---|---|---|
| Free tier | 10/day | 10/day | 10 credits/day |
| No signup needed | Yes | Yes | Yes |
| Watermarks | None | None | None |
| Ads on free tier | No | No | Yes |
| Pricing model | 1 file = 1 credit, shown upfront | Per conversion minute | Credit packs |
Privacy & file security
Filevo deletes your uploaded TAR.GZ file immediately after conversion and removes the converted 7Z within 24 hours. Everything travels over TLS encryption, processing is fully automated with zero human access, and your files are never used for AI training. See our Privacy Policy for details. Privacy Policy →
TAR.GZ to 7Z converter FAQ
How do I convert TAR.GZ to 7Z for free?
Drop your TAR.GZ file into the converter at the top of this page, confirm 7Z as the target, click Convert, and download the result. It is genuinely free: 10 free conversions a day with files up to 200 MB (20/day and 500 MB with a free account), no watermarks, no software to install, no account required.
Is it safe to convert TAR.GZ files online?
Yes. Transfers are TLS-encrypted end to end, and conversion is fully automated — no human ever sees your files. Your uploaded TAR.GZ is deleted the moment conversion finishes, and the converted 7Z auto-deletes after 24 hours (you can delete it sooner). We never use your files for AI training or share them with anyone.
Will I lose quality converting TAR.GZ to 7Z?
Archive conversion is lossless by nature: your TAR.GZ is fully unpacked and repacked as 7Z — every file inside stays byte-identical, only the outer container and compression algorithm change. Folder structure is preserved exactly.
How long does TAR.GZ to 7Z conversion take?
Usually seconds. The conversion itself takes from under a second to a few seconds for images and audio — most of the wait is the upload, which depends on your connection speed. Since processing happens in the cloud, your device stays fast, and you can run several conversions in parallel.
Can I convert TAR.GZ to 7Z on iPhone or Android?
Yes. Filevo runs entirely in the browser, so it works the same on iPhone, Android, tablets, and computers — no app to install. On mobile, tap Browse Files to pick from your photos or files.
What's the maximum file size?
Anonymous conversions accept files up to 200 MB; a free account raises that to 500 MB. Paid plans go from 1 GB up to 10 GB per file, with higher daily limits and priority queues.
Can I convert multiple files at once?
Yes. Drop up to 50 files at once — they roll through the queue automatically. Pick a target format per file or set one per category, then download results individually or grab everything as a single ZIP.
What will the converted file be named?
Your original name is kept and only the extension changes — holiday.gz becomes holiday.7z, so files stay easy to find.
Whether you need maximum compression for backups and large transfers or simply a file that works where TAR.GZ will not open, the converter above turns TAR.GZ into 7Z in seconds — free, private, and with nothing to install. Bookmark this page for the next time a TAR.GZ file refuses to cooperate.
Last updated: 2026-07-27